Capital Controls® Series Z-CHLOR 3000 Residual Sulfite Analyzer

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Capital Controls® Series Z-CHLOR 3000 Residual Sulfite Analyzer
The Capital Controls® Series Z-CHLOR 3000 residual sulfite analyzer provides continuous measurement of sulfite residuals typically found in applications where sulfur compounds are used to eliminate residual chlorine from treated waters. Residual chlorine is normally removed by injection of sulfur dioxide gas or a solution of sodium bisulfate. As long as there is an excess of sulfite ion in the effluent, chlorine is effectively zero. In most facilities where dechlorination is required, relatively high sulfite residuals are maintained in order to ensure the effective removal of chlorine. The Z-CHLOR 3000 measures the sulfite residual and provides an output that can be used to control chemical consumption.

Fouling problems have frequently plagued sulfite measuring. The Z-CHLOR 3000 sensor does not come into contact with the sample, and therefore is not affected by sulfur reducing bacteria that may be present in the water.

The sulfur dioxide is stripped from the sample and measured by a gas sensor located in the chemistry module. The measured value is displayed in terms of equivalent sulfite ion concentration. Acid usage for pH adjustment is inexpensive and limited to 1 gallon every 40 days.

The Z-CHLOR 3000 is a modular system consisting of a chemistry module where the sample pH is adjusted for measurement, an inlet overflow assembly where sample is delivered to the system, and an electronics module that displays the sulfite residual and provides control outputs and alarm relays.

  • Non-contact measurement between the sample and sensor, eliminating the potential for sensor fouling.
  • Sulfite ion is measured selectively by conversion to sulfur dioxide.
  • Continuous sulfite measurement ensures complete dechlorination while reducing chemical consumption.
  • Automatic system for cleaning the sample inlet line to control fouling is provided by the analyzer.
  • Two control relays provide on/off control for direct chemical feed pump modulation.
  • Isolated 4-20 mA output.

Specification

Range: 0-2.000 or 0-20.00 PPM
Accuracy: ±0.03 PPM
Repeatability: ±0.01 PPM
Linearity: 0.1% of FS
Zero Drift: <0.01 PPM per month
Display: 16 character alphanumeric backlit LCD
Control Relays: Two SPDT relays, 5A @ 220 VAC resistive. Programmable deadband and time delay
Control Mode: On/Off, pulse width modulation, pulse frequency modulation
Alarm Relay: Programmable for actuation on high/low values or system failure.
Analog Output: Isolated 4-20 mA, 600 ohm maximum load. Programmable output span. Output may be inverted.
Operating Conditions: 0-50°C, 0-95% RH non-condensing
Power: 110/220 VAC ±10%, 50/60 Hz
Electronics Enclosure: NEMA 4X (IP-65) wall mount Chemistry Module
Enclosure: NEMA1
Sensor: Membraned SO2 gas sensor
Sensor Cable: 25 ft standard, 100 ft maximum
Response Time: 95% in 3 minutes
Range: 0-2.000 or 0-20.00 PPM
Accuracy: ±0.03 PPM
Repeatability: ±0.01 PPM
Linearity: 0.1% of FS
Zero Drift: <0.01 PPM per month
Display: 16 character alphanumeric backlit LCD
Control Relays: Two SPDT relays, 5A @ 220 VAC resistive. Programmable deadband and time delay
Control Mode: On/Off, pulse width modulation, pulse frequency modulation
Alarm Relay: Programmable for actuation on high/low values or system failure.
Analog Output: Isolated 4-20 mA, 600 ohm maximum load. Programmable output span. Output may be inverted.
Operating Conditions: 0-50°C, 0-95% RH non-condensing
Power: 110/220 VAC ±10%, 50/60 Hz
Electronics Enclosure: NEMA 4X (IP-65) wall mount Chemistry Module
Enclosure: NEMA1
Sensor: Membraned SO2 gas sensor
Sensor Cable: 25 ft standard, 100 ft maximum
Response Time: 95% in 3 minutes
Sample Pump: Internal tubing pump, 5 cc/min
Acid Pump: Internal tubing pump, 0.06 cc/min
Air Supply: Diaphgram air pump with precision flow control
Air Stripping Chamber: Cast Acrylic
Temperature Limits: 0-50°C
Sample Flow Rate: 3-30 GPH (.2-2 LPM.) at sample inlet overflow assembly
Sample Inlet: 1/4' ID hose barb
Sample Drain: 1/2' ID hose barb
Power: 120 VAC, 60 Hz. standard, 220 VAC, 50 Hz optional Internal tubing pump, 5 cc/min
Acid Pump: Internal tubing pump, 0.06 cc/min
Air Supply: Diaphgram air pump with precision flow control
Air Stripping Chamber: Cast Acrylic
Temperature Limits: 0-50°C
Sample Flow Rate: 3-30 GPH (.2-2 LPM.) at sample inlet overflow assembly
Sample Inlet: 1/4' ID hose barb
Sample Drain: 1/2' ID hose barb
Power: 120 VAC, 60 Hz. standard, 220 VAC, 50 Hz optional

Severn Trent Services,  Inc
Severn Trent Services, Inc
580 Virginia Drive, Suite 300
Fort Washington ,  PA 19034

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